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I would agree with SAR. I have made both scrubbers and filters and the one I bought works better.
5 lbs of activated carbon around here is about 35 bucks. I used 15 lbs to fill the filter and 5 lbs to fill a scrubber.
Buying the carbon bulk would make it more cost effective, but 50lbs is still 148$-178$
(all prices are Kanadian)
I have read they vibrate the cans while filling, but whatever they do, they do it well.
We still have one of the scrubbers in use and works great for veg.
But unless you are going to specialize in non-stinky plants the commercial ones will make you happier.
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Hanging in the Cabana
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